19๐
You can find out the solution at fiddle link
var ctx = document.getElementById("chart-area").getContext("2d");
var myDoughnut = new Chart(ctx, config);
var config = {
type: 'doughnut',
data: {
datasets: [{
data: [
10,20,30
],
backgroundColor: [
"#F7464A",
"#46BFBD",
"#FDB45C"
],
}, {
data: [
randomScalingFactor(),
randomScalingFactor(),
randomScalingFactor()
],
backgroundColor: [
"#F7464A",
"#46BFBD",
"#FDB45C"
],
}],
labels: [
"Red",
"Green",
"Yellow"
]
},
options: {
responsive: true
}
};
4๐
You need to add multiple datasets into chart. they will be displayed as you need. Please look into their own sample of pie chart. You can download and open it locally as example. There they have multiple datasets, that makes chart look like you need.
Hope that it helped.
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0๐
I know it was old question, but have stuck yesterday into same, so far best that i have touch is Chart js and this is a plugin who does exactly that (and even more!)
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0๐
In the โdataโ field, we add more charts by adding elements for the โdatasetsโ array.
data: {
labels: [], // Label of Legends and Slices on Doughnut Chart.
datasets: [
{
data: [], // Doughnut Chart data.
backgroundColor: [], // Color of Slices on Doughnut Chart.
...
}
]
};
Chart.register(ChartDataLabels);
// Write Javascript code!
var ctx = document.getElementById('myChart');
var data = {
// labels: ['Red', 'Orange', 'Yellow', 'Green', 'Blue'],
datasets: [
{
data: [20, 20, 50, 70, 80],
backgroundColor: ['#FFC300', '#F72585', '#4CC9F0', '#5ED400', '#4D09E8'],
},
{
data: [90, 30, 60, 40, 20],
backgroundColor: ['#FFC300', '#F72585', '#4CC9F0', '#5ED400', '#4D09E8'],
},
],
};
var options = {
responsive: true,
plugins: {
datalabels: {
color: 'white',
font: {
weight: 'bold',
},
},
},
};
var myDoughnutChart = new Chart(ctx, {
type: 'doughnut',
data,
options,
});
<script src="https://cdn.jsdelivr.net/npm/chart.js@3.0.0/dist/chart.min.js"></script>
<script src="https://cdn.jsdelivr.net/npm/chartjs-plugin-datalabels@2.0.0"></script>
<canvas id="myChart" width="400" height="400"></canvas>
An example of adding and removing rings in ChartJS with buttons.
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Source:stackexchange.com